Safety valve to prevent massive water loss due to leakage, especially at the supply hose. It is installed together with the pressure reducer in a vertical position on the tap, with the valve in the first position.
The Water Block has an integrated non-return valve and two magnets to reduce limescale deposits.
Sensitivity
The correct setting is important! The device has 10 flow levels, whereby only level 1 with approx. (1.5) - 2 litres/min is suitable for Blumat drip irrigation. Blocking is only triggered after approx. 4-5 litres of flow have been measured. The sensitivity of level 2 only starts at approx. 6-7 litres/min.
The flow sensitivity is adjusted on the inside on the underside using the spanner supplied (see photos). After a blockage, the pin on the underside must be pressed in again in a depressurised state (dismantle).
Caution! Water Block only stops if there is a leak in the supply hose area - not in the drip hose!
What throughput volumes can be expected?
In the event of a total bite, an erroneous cut-through or a loosened plug connection, a water loss of 1.5 - 4 litres/min or up to 7 litres/min occurs with a full cross-section, depending on the position in the system (at the end or soon after the pressure reducer), also depending on the inlet pressure. These quantities are easily recognised by stage 1
If drip hoses are bitten off or come loose at the plug-in nozzle, 0.6 - 0.8 (1.0) litres/min can be expected, usually below the sensitivity of level 1, the blockage is hardly triggered.
However, the safety valve must not block normal operation. A system with a total of 200 drip blumat has an average flow rate of approx. 0.3 litres/min, whereby it is assumed that a maximum of half of the total drippers drip more or less heavily at the same time. There is therefore no risk of the safety valve switching off during normal operation.
Data
- Maximum pressure 10 bar,
- Maximum water temperature 70°C,
- Operating flow rate 2 - 30 litres/min,
- blocking after flow rate of 5-50 litres,
- Pressure loss 0.1 bar
- Installation position vertical, frost-free,
- Length 90 mm, diameter 50 mm,
- Hexagon SW 30 + 32,
- Length with pressure reducer approx. 180 mm.
- Manufacturer: Eltek
Supplied without pressure reducer
Strada Valenza 5A
Casale Monferrato, Italien, 15033
https://www.eltekgroup.it
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